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Change System Settings? SystemParametersInfo()!

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I needed to change ClearType settings programmatically. So, I tried to modify registry key values. It worked! But, it did after rebooting. :(

What if you would like to make it effective right away as you click ok button on the control panel?

Write some code with this function:

 https://msdn2.microsoft.com/en-us/library/ms724947.aspx

In case of ClearType, settings as follows work:

SPI_SETFONTSMOOTHING (TRUE)

SPI_SETFONTSMOOTHINGCONTRAST (machine specific, 1600 works for me)

SPI_SETFONTSMOOTHINGORIENTATION (depending on your monitor pixel orientation, usually FE_FONTSMOOTHINGORIENTATIONRGB)

SPI_SETFONTSMOOTHINGTYPE (FE_FONTSMOOTHINGCLEARTYPE)